Dictionary
he•li•o
Pronunciation: (hē'lē-ō"), [key]—
n.,
—pl. -li•os.
Informal.
1. a heliogram.
2. a heliograph.
helio-
a combining form meaning “sun,” used in the formation of compound words:
heliolatry. Also, esp. before a vowel,heli-.Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.